The combined Average marks of Boys and girls of a class is 66 and the ratio of number of boys and girls is 3:1 and the average marks of the boys is 68. Find the average marks of the girls?
Ratio = 3:1 (66-x)/2 = 3/1 66 – x = 6 x = 60
Among the following which is not a macronutrient?
viroid consists of
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For the farm area of 40 ha. followed under a single cropping pattern, the suitable size of tractor is __ ?
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